Ⅰ.语境填词
1．His new book is full of ________ (challenge) ideas.
2．Praise acts as an ________ (encourage) to the young.
3．It was a very ________ (enjoy) concert that we had last night.
4．To his ________ (satisfy)，he passed all the examinations.
5．There was nothing special about the meal；it was ________ (平常的)．
